nuts Get Printable Handwriting (nuts) 1 syllables Learn It! Spelling Test Definition noun. 1 usually large hardshelled seed; 2 a small usually square or hexagonal metal block with internal screw thread to be fitted onto a bolt;adjective. mentally irregular Example Sentence He was cracking the nuts for his grandma. Synonyms acorn; walnut; pecan Antonyms apple Share with your friends: